Apparatus for feeding materials to a mixer.



No. 885,951. PATENTED APR. 28, 1908.

' A. L. POSTS APPARATUS FOR FEEDING MATERIALS TO A MIXER.

PPL 0 N 2 A I ATIO FILED FEB 1 ,1906 3 BHEETS SHEET 1.

' wmvssssi r A A l/VVE/VTOR gy w A TTORNEYJ No. 885,951. .PATENTED APR. 28, 1908.

A. L. POST.

APPARATUS FOR FEEDING "MATERIALS TO A MIXER APPLICATION FILED IEB, 12, 1906.

" vs SHEETS-SHEET 2.

WITNESSES: Q l/vysmrbfl Ww. m fiamqg By ATTORNEYS PATENTED APR. 28, 1908.

A. L. P0s11- APPARATUSFOR FEEDING MATERIALS TO A MIXER.

APPLICATION FILE D FEB. 12, 1906.

WITNESSES.

Armin/Em? UNITED STATES,

P TENT ALVAH L. rosnor KENT, o-nro, ASSIGNOR-TO THE KENT MACHINE COMPANY, OF KENT,

- onro, A CORPORATION or 01-110.

r APPARATUS FOR FEEDING MATERIALS TO A MIxER.

Specification of Letters Patent.

' Patented 28, 1908.

Application filed February 12, 1906. SerialNo. 300.727,

I To all whom it may concern:

Be it known that I, ALVAH L. Posr, a citizen of the United States of America, residing at Kent, in the county of Portage and State of Ohio, have invented certain new and useful Improvements in Apparatus for'Feeding Materials to a Mixer; and I hereby declare the'following to be a'fl ll, clear, and exact description of the'inventlon, such as will enable others skilled in'the art to which it pertains to make and use the same.

My invention relates to improvements in apparatus for feeding materials, such as sand and cement to a mixing apparatus.

The/objects of my'invention are to feed two materials to a mixer at rates variable simultaneously and without varying the relamixm'gfand conveying blades b.

B, isoperated by a power shaft D, and pulley Figure 1 is a side Y Y tral section, of'apparatusembodying my intive pro ortions of the materia fed, to discharge t e two materials into ,the mixer as nearly'c'ontiguous as possibleand to provide means, in part adjunctive to the means for verging the feeding rates, for rendering the fee ing mechanism inoperative without stop- 1ping the power shaft. I attain these objects y means of-mechanism and features of construction illustrated in the accompanying drawings in which elevation, largely in cenvention; Fig. 2, a section on line 22, Fig. 1, looking in the direction indicated by the arrow; Fig; 3, a sectional plan view' on line.

-33, of Flg. 1; Fig, 4,;a sectional plan view on line ,44, of Fig. 1; 5, a, section on 'line 55, Fi 2, looking-in the direction indicated by th (1, through bevel gears 12, and 10; the shafts and trough being suitably 'supported by C,

the frame work of the 'machine.

Arranged above the mixing chamber and suitably supported by the frame Work 0, are two hoppers G, in the chambers g, of which are contained the materials m, to be proportioned. The lower end of each hopper chamher is closed by a movable bottom h. The

' two bottoms h, are preferably'r'igidly secured -together by being eachsecured to and between the two side barsK, and are separated .sufliciently toform a discharging space 17, "between them.

abovethe upp'er surfaces of the bottoms h, thus forming flanges overlapping. the lower ends of the hoppers. mounted on the stationary frame work in any suitable way for reciprocation tandem. This mounting as shown in thedrawings' oomprises the bearing lugs 7c, in which are formed" all races 19, thebearing members'L, secured to the frame Work, and the bearing balls-Z.

The bars K, may extend y The bottoms h; ma be The two ho pers G, are separated somewhat to form a; ischarging space between them.

Each hopper has a lateral discharge. opening", 15, in its side wall facing toward the ether 3 hopper, extending the entirejwidth of the hopper chamber and immediately above the) hopper bottom h. The bottoms h,' are'of sufficient length to permit of their maximum reciprocating movement and yet always close 8'0 portion 16, of each bottom to always eyond the dischargeside of its re- 4 spective hopper sufficiently to preventany the hopper chamber from below and to'also allow a extend continuous discharge of the contents thereof bygravity, through the opening 15, and space 17.

vided with a vertically adjustable gate 6, fitted to slide between guides f, for varying the height of theirdischarge openings and thus controlling the discharge of material 'fl'QIIl the hoppers to vary the relative of the materials fed therefrom.

Each or either of the hoppers Imay be pro-- pIroportions' .o prevent leakage between the hopper bottoms and the walls of the hoppers opposite to the discharge openings, an apron plate J, having a wing extension 20, overlapfping the hopper bottom,

is secured to each 0 said walls as shown.

In operation it will be seen that as either feeding bottom h, moves outwardly or from its respective hopper it carries with it there-.

from a layer of material equal in thickness to the height of the discharge opening throu h which said material passes and that as t e backward movement of the bottom toward' the hopper cannot carry the layer of material back into the hopper, the bottom h, will be withdrawn from under a portion of said layer,

v with each other.

thus allowing said portion. to fall througll the space-17, between the bottoms it, into the mixing. chamber. The reciprocating movements of the bottoms it, thus discharge the materials from the two hoppers into the mixing chamber alternately and in contact The reciprocating movemerits of the bottoms h, are transmitted from a crank operated by the rotary shaft-D. The crank illustrated in the drawings consists of a sprocket Wheel 25, suitably mounted for rotation, either on or with a shaft Q, supported from the frame C, and is provided with a laterally projecting wrist pm 26, and operated by a sprocket wheel 24, and chain 23, from the shaft D. The crank wrist 26, is pera tively connected by a connecting rod 27, to the lower end of an oscillatory feed leverR,

- the connection of the rod to the lever being -d1rections, as at 38'.

flexible. The upper end of the feed lever R, is pivotally connected, as at 28, to lugs dependmg from and integral with one-of the hopper bottoms it. Through the feed lever R, there is a transverse and parallel slot 30, extending longitudinally thereof and terminating at its upper end in an enlargement thereof in both A fulcrum bearin block 8, is fitted 'to slide longitudinally o the feed lever R, withthe slot 30.

a and the fulcrum bearing in the arallel slot 30. The surfaces of the sides of the upper end of the fulcrum block 8, which come 1n contact with the feed levers are flat and parallel while those of its lower end, as at 37, are curved to a circle equal in diameter to the width of the slot 30. The central portion,of block 8, is in ade narrow by cutting away at opposite sides, as at 36. The bearing block 8, is not at all necessary to the perfect o eration of this mechanism, and-is only user for the purpose of increasing the area of the bearin or wearing surface, of the fulcrum in. If t e bearing block is omitted the widt of the slot 30, must of course be made to fit the fulcrum pin. A fulcrum adjusting lever u, is pivotally secured at one end to the frame work C, at 32, and extends therefrom across the feed lever .R, transversely and terminates with an actuating handle at its free end. There is an opening or slot through the fulcrum ad'usting lever u, in which the feed lever B, an the fulcrum bearing block 3, operate. The fulcrum-ad- 'usting lever u, and the fulcrum bearing lock s, within the slot 30, -are connected together by a fulcrum pin T, which extends transversely through them and is fitted to arm a, and 33, in the u per end of block 8. The fulcrum pin and t e fulcrum bearing block may thus be carried by the fulcrum-adjusting lever to any position desired within For retaining the fulcrum pin block in different ositions along the slotted ortion of the feed ever R a retaining plate is secured to one withdrawn from the perforations in the retaining plate T.

A latch lever 1 is pivoted at its fulcrun'l 42, to the side of the fulcrum adjusting lever u. One end of the latch lever lies in an annular groove 43, formed in the fulcrum pin 1", while the opposite arm of said lever 1 'is in position to be grasped together with the andle of the fulcrum adjusting lever, by the hand of the operator. For withdrawing the fulcrum pin from engagement with the retaining late T, the latch lever y, is actuated by the fiand of the operator against the ac tion of a suitable spring ac, properly mounted for actuating said latch lever to throw the fulcrum pin into engagement with the retaining plate and toretain it there. The upper end of the retaining plate T, is provided with a slot 40, elongated transversely of the plate.

When the end of the fulcrum pin 1', is within the elongated perforation 40, the

upper end of the fulcrum block s, iswithin 'thelaterally enlarged upper end 38, of the slot 30, and the feed lever therefore cannot pivot on the fulcrum pin 1*, and thus reciprocate the bottoms h, but is permitted by the enlargement 38, of slot 30, the elongation of perforation 40, and the form of block 5, to be swung idly on its pivotal connection with the hopper bottom h, at 28, thus allowing the power shaft to operate without operating the hopper bottoms. With the fulcrum pin 1", retained in any perforation in the plate T,.. other than slot 40, the action of the crank and connecting rod 27, causes the lever R, to oscillate, ivoting on the substantially stationary fu crum pin 1% The hopper bottoms 72, being connected to the upper end of the feed lever R, are thus given a reciprocating movement, the length or extent of which is increasedor diminished by shifting the fulcrum pin 1", farther from or nearer to the pivotal connection 28. The frequency of the reciprocations of the bottoms 7L, being length of the reciprocating movements is al- I ways the same for both bottoms 7", the rela,

tive proportions of the materials discharged are not affected by thus changing the rates of discharge.

What I claim as my invention and desire 5 to secure by Letters Patent is charge out et leading into the space between the hoppers, and the hopper-bottoms adapted to always intercept the materials discharged from the hoppers, so that, in operation, the hopper bottoms, convey the materials from the hoppers and discharge them near together through the' space between said bottoms.

2. In a feeding apparatus, two stationary hoppers separated by' a discharge space and each having a lateral outlet into said dis charge space, in combination with two movable hopper bottoms separated by a discharge space, mounted, connected together and adapted for simultaneous reciprocation and adapted to always intercept the materials.

. discharged from the hoppers, means adapted and connected foractuating the hopper bottoms, and means adapted to vary the extent of the movements of said hopper bottoms;

. so that, in operation, the hopper bottoms convey the materials from the hoppers and discharge them near together at adjustably variable rates.

3. In a' feeding apparatus, two stationary hoppers se arated by a space into which there isa ateral outlet from each hopper,

and two movable hopper bottoms separated by a discharge space, said bottoms being mounted and connected together for simultaneous operation and adapted to always intercept the materials dischargedfromflthe hoppers, in combination with an oscillatory feed lever connected for operating the hopper'botto'ms, a fulcrum pivot on which the '7 feed lever oscillateaad'apted to be shifted along said feed lever, -means for shifting the fulcrum pivot along-the feed lever, and 50 means for retaining said fulcrum ivot in different positions along said feed, ever; so that, in operation, the hopper bottoms convey the materials from the hoppers and discharge them near together, at adjustably 5 variable rates;

{1. Ina feeding apparatus two stationary hoppers separated by a spaceinto which there is a latera outlet, and two movable hopper bottoms separated by a discharge space, mounted, connected together for simultaneous operation and adapted to always inter-s A cept the materials disc arged from the hopers, in combination with an oscillatory feed ever connected for operating the hopperbottoms, a fulcrum pivot on, which the feed y a discharge space, in

lever oscillates adaptedto be shifted alon said feed lever, an adjusting lever adapte and connected to shift the fulcrum pivotlongitudinally of the feed lever and a-retaining device adapted to retain the fulcrum pivot in different positions along the, feed lever; so that, in operation, the hopper bottoms convey the materials from the hoppers anddischar e them near together at adjust- 4 ably variab e rates, I s 5 5. In a feeding apparatus, two stationary hoppers separated .by a space into which there is a lateral outlet from each hopper, and two movable hopper bottoms separated by a discharge space, said bottoms being mounted and connected together and adapted for simultaneous operation and adapted to always intercept the materials discharged from the hoppers, in combination with an oscillatory feed lever connected for operating the hopper bottoms, a'fulcrum pivot on which the feedlever oscillates, ada ted to be shifted along said feed lever, an ac justing'.

lever adapted and connected to shift the fulcrum pivot longitudinally of the feed lever, a retaining plate adapted to retain the fulcrum pivotin diflerent'positions along the feed lever and a hand lever adapted and connec'ted to shift the fulcrum pivot into and there is a lateral outlet from each hopper, and

two movable hopper bottoms separated by a discharge space, said bottoms being mounted and connected togetherforsimultaneous o eration and adapted to always intercept t e materials discharged from the hoppers, in

combination with an oscilla'toryfeed lever connected for operating thehopper bottoms, a fulcrum pivot, on which the. feed lever oscillates, adapted to-be shifted along said feed lever, a fulcrun'i bearing block fitted to be guided by and to slidelongitudinally ofthe feed lever and connectedto the fulcrum pivot,'a-n adjusting lever adapted and connected to shift the fulcrum pivot longitudi-.

nally of the feed -lever,- a retaining plate adapted to retain the'fulcrumpivot in dlfierent positions along the feed lever and a hand lever. adapted-and connected to shift the fulcrum pivot intoand out of engagement with the retaining plate; so that, in operation, the

hopper bottoms convey the materials from the hoppers and discharge thenrnear'together at adjustably variable rates.

7". In a feeding apparatus, two stationary hoppers or com artments each having a lateral outlet, anc two movable hopper bottoms, said bottoms being mounted and connected and adapted to be operated in unison and always intercept the materials discharged from the hoppers, in combination with an oscillatory feed lever connected for per bottoms convey and discharge the pia terials from the hoppers at adjustably variabletrates.

8. In a feeding apparatus, two stationary ho pers or compartments each having a latera outlet, and two movable hopper bottoms, said bottoms being mounted and connected. and adapted to be operated inunison and always intercept the materials discharged from the hoppers, in combination with an oscillatory feed lever connected for operating .the hopper bottoms, a fulcrum plvot, on

which the feed. lever oscillates, adapted to be shifted along said feed lever, an adjusting lever adapted and connected to shift the fulcrum pivot longitudinally of the feed lever and a retaining device adapted to retain the fulcrum pivot in different positions along the feed. lever; so that, in operation, the hopper bottoms convey and discharge the materials from the hoppers at ad ju stably variable rates. 9, In a feeding apparatus, two stationary hoppers or compartments each having :1- lat eral outlet, and two movable hopper bottoms,said bottoms being mounted and coin nectcd and adapted to be operated in unison and always intercept the materials dischargul. from the hoppers, in combination with an oscillatory feed lever conneetedfor.

operating the hopper botton'is, a fulcrum lvot pm about which the feed lever oscillhtes, adapted to be shifted along said feed lever, a fulcrum bearing bloch fitted to be guided by and to slide longitudinalfv of the feed lever :nnl mounted to oscillate about said fulcrum pin, an adjusting lever adapted and connected to shift the fulcrum pivotfpin longitudinally of the feed -lc'\'er, a retaining plate adapted to retain the fulcrum lpivot pin in different positions along the feed ever and a hand lever adapted and connected to shift the fulcrum pivot pin into and out of engagement with the retaining platc so that, in operation, the hopper bottomsconvey and dischargethe materials from the hoppers at adju-stably variable rates.

10. In a feeding apparatus, two stationary hoppers separated by a space into which there is a lateral outlet from each hopper, and. two movable hopper bottoms separated by a discharge space, said bottoms being mounted and connected together for simultaneous o eration and adapted. to always intercept tff materials discharged from the hoppers, in combination with an oscillatory feed lever connected for operating the hopper bottoms, a fulcrum pivot on whlch the feed lever oscillates, adapted to be shifted along said feed -lever, an adjusting lever adapted.

and connected to shift the fulcrum pivot along the feed lever, and a retaining device adapted. toretam said fulcrum pivot in d1l" ferent positions along the feed lever, said retaining device and said feed lever being adapted to allow the latter to swing without .movingthc hopper bottoms, when-the fulcrum pivot is brought to one extremity of its movement; so that, in operation, the hopper bottoms convey the materials from the hoppers and discharge them near together at rates adjustabl variable from zero to maxidischarged from the hoppers, in. combination; with an oscillatory feed lever connected for operating the hopper bottoms, a fulcrum pivot on which the feed lever oscillates, adapted to be shifted. along said feed lever, means adapted and connected to shift the fulcrum pivot along the foul lever and means for retaining said fulcrum pivot in different positionsalong said feed lever, said. retaining means and. said food lover being adapted to allow the latter to swing'without moving the hopper bottoms when the fulcrum pivot is brought to one-extremity of its movement; so that, in operation, the hopper bottoms convey and discharge the materials from the hoppers at rates adjustablv variable from maximum to zero.

12. In afeed ing apparatus,-two stationary hoppers separated by a space into which there is a lateral outlet from each hopper, and two movable hopper bottoms separated. by a discharge space, said bottoms being mountedandconnccted together for simul' taneous o aeration and adapted. to always intercept the materials discharged. from the hoppers, in combination with an oscillatory feed lever connected for operating the hopper bottoms, a fulcrum pivot on which the feed. lever oscillates, adapted to be shifted along said feed lever, means for shifting the fulcrum pivot along the feed lever and means for retaining thesaidpivot in different posi-- tions along the feed lever, said retaining means and said feed lever being adapted to permit the latter to swing without moving the hopper bottoms when the fulcrum pivot is at one extremity of its movement; so that, in operation, the hopper bottoms convey the materials from the. hoppers and discharge them near together at rates adjustably Variable from maximum to zero.

13. In a feeding apparatus,'two stationary hoppers separated by a, space into which 4 connected for o eratin the hopper bottoms and having a on itu inal slot, a fulcrum there is a lateral outlet from each hopper,

v ing lever adapted and connected for shifting the fulcrum pivot and fulcrum bearing block along the feed lever, a retaining plate adapted to retain the fulcrum pivot in'diflerent posi-tions-along the feed lever and a hand lever adapted and connected for shifting said pivot into and out of engagement with'the retaining plate, one end of the slot in the feed lever being widened, the fulcrum bearing block cut away on both bearing sides between its two slot fitting end portions, and the retain ing plate provided with an 'elongated retaining erforation, for adapting and permitting the eed lever to swing without moving the hopper bottoms; so that, in operation, the hopper bottoms may convey and discharge the materials from the hoppers close together at rates adjustably variable from zero to maximum. p

14. In a feedingapparatus, two stationary hoppers or compartments, each having a lateral outlet, and two movable hopper bottoms mounted,"connected and adapted to be operatedin unison and to always intercept the i materials discharged from the hoppers, in combination with an oscillatory feed lever bearing block slida le withinthe slot in the feed lever, a fulcrum pivot about which the feed lever and-said bearing block. oscillate, having a,bearing in and through said bearing block, an adjusting lever adapted and connected for shifting the fulcrum pivot and the fulcrum bearing block along the feed lever, a retaining plate adapted toretain the fulcrum pivot in different ositions along the feed lever and a hand l nected to shift the-fulcrum pivot into and out of engagement with the retainin plate, one end of the slot in the feed ever being widened, the fulcrum bearing block cut away on bothbearing sides between its two slot fitting'portions and the retaining'plate provided with an elongated retaining perfora-' tion, for adapting and permitting the feed lever to swing w thout moving the hopper.

bottoms so that, in operation, the hopper bottoms convey and discharge the materials from thehoppers at rates adjustably variable from zero to maximum.

e materials discharged from the ver, a fulcrum pivot about gether for simultaneous operation and ada t-f through the slot in the feed lever, about ever adapted and con 15. In a-feeding ap aratus, a stationary I hopper having a latera outlet, and a hopper bottom mounted fori'eciprocation beneath the hopper and adapted to always intercept the materialsdischarged from the hop er, In combination with an oscillatory fe lever connected for operating theihopper bottom,

a fulcrum pivot on which the feed leverv oscillates, an adjusting lever adapted and con' nected to shift the fulcrum pivot longitudinally of the feed lever, a retaining plate adapted to retain the fulcrum pivot in difi'erent positions along the feed lever and a hand lever adapted and connected to shift the fulcrum pivot into and out of engagement with the retaining plate; so that, in operation,

the hopper bottom conveys and discharges the material from the hopper at adjustably variable rates. v

16. In a feeding apparatus, two' stationar hoppers separated by a space into which there is a'lateral outletfrom each hopper,

' two movable hopper bottoms separated by a dischargespace, mounted and connected toad to; always intercept the materials ischarged from the 'hoppers, in combination with'an oscillatory feed lever slotted longlitu dinally and connected for operating the op per bottoms, a fulcrum pivot pin extending 9 which pin said lever oscillates, an adjusting U lever adapted and connected to shift the fulcrum pivot pin along the feed lever, a retain, ingplate adapted to retain said fulcrum pin in different ositions along the feed lever and means for s ifting said pin endwise, one end of the slot in the feed lever widened and the retaining plate provided-with an elongated retaining perforation, for adaptin' and permitting the feed lever to swing wit out moving the ho per bottoms; so that, in operation, the libpper -bottoms convey and discharge the materials fromthe hoppers close together at rates adjustably variable from zero to'maximum.

17 In a feeding apparatus, two stationary hoppers or compartments,'each having 9; lateral outlet, and two movable hopper bottoms mounted, connected and adapted to be- 0 erated in unison and always intercept t ematerials discharged from the hoppers, in combination with an oscillatory feed lever slotted longitudinally and connected for op- 'erating the hopper bottoms, a fulcrum pivot pin extending through the slot in the feed lever, about which pivot pin said lever oscillates, an adjusting lever adapted and con- I nected to shift the fulcrum ivot pin along the feed lever, a retaining p ateadapted to retain said pivot pin in difierentpositions along the feed lever and means for shifting said pivot pin endwise, one end of the slot in the feed lever widened and the retaining plate provided with an elongated retaining Ferforation'for adapting and permitting the specification, in the presence or" two Witeed lever to swin Without HlOYiIlg the hopnesses. I 'per bottomsso t at in operation the hop; I

per bottoms convey ahd dlscharge the mate- ALVAH P T 5 rials from the hogwrs close together etrates \Vitnesses:

adjustably varia e from maximum to zero.- G. H. DORER.

111 testimony whereof, I sign the foregoing B. BROWN 

